Clean up pom, upgrade plugins

Removed repositories entries because it appears mvnrepository.com is itself
not a repository but only a browser for repositories so might have been
ignored by Maven.

Author: Marcono1234

pom.xml

@@ -40,8 +40,7 @@
 
 	<properties>
 		<project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
-		<maven.compiler.target>11</maven.compiler.target>
-		<maven.compiler.source>11</maven.compiler.source>
+		<maven.compiler.release>11</maven.compiler.release>
 		<xcodeScheme>Debug</xcodeScheme>
 	</properties>
 
@@ -65,7 +64,7 @@
 	<licenses>
 		<license>
 			<name>Apache License, Version 2.0</name>
-			<url>http://www.apache.org/licenses/LICENSE-2.0.txt</url>
+			<url>https://www.apache.org/licenses/LICENSE-2.0.txt</url>
 			<distribution>repo</distribution>
 		</license>
 	</licenses>
@@ -74,7 +73,7 @@
 
 	<organization>
 		<name>Web Lite Solutions Corp.</name>
-		<url>http://solutions.weblite.ca</url>
+		<url>https://solutions.weblite.ca/</url>
 	</organization>
 
 	<issueManagement>
@@ -91,29 +90,6 @@
 		<url>https://github.com/shannah/Java-Objective-C-Bridge</url>
 	</scm>
 
-	<repositories>
-		<repository>
-			<id>mvnrepository</id>
-			<name>mvnrepository</name>
-			<url>https://www.mvnrepository.com</url>
-			<snapshots>
-				<enabled>false</enabled>
-			</snapshots>
-		</repository>
-	</repositories>
-
-	<pluginRepositories>
-		<!-- eclipse lifecycle plugin is only available here -->
-		<pluginRepository>
-			<id>mvnrepository</id>
-			<name>mvnrepository</name>
-			<url>https://www.mvnrepository.com</url>
-			<snapshots>
-				<enabled>false</enabled>
-			</snapshots>
-		</pluginRepository>
-	</pluginRepositories>
-
 	<distributionManagement>
 		<snapshotRepository>
 			<id>ossrh</id>
@@ -136,7 +112,7 @@
 			<extension>
 				<groupId>org.apache.maven.wagon</groupId>
 				<artifactId>wagon-ssh</artifactId>
-				<version>2.4</version>
+				<version>3.4.2</version>
 			</extension>
 		</extensions>
 
@@ -145,7 +121,7 @@
 			<plugin>
 				<groupId>org.codehaus.mojo</groupId>
 				<artifactId>exec-maven-plugin</artifactId>
-				<version>1.6.0</version>
+				<version>3.0.0</version>
 				<executions>
 					<execution>
 						<id>xcodebuild</id>
@@ -172,7 +148,7 @@
 			<plugin>
 				<groupId>org.apache.maven.plugins</groupId>
 				<artifactId>maven-jar-plugin</artifactId>
-				<version>3.1.2</version>
+				<version>3.2.0</version>
 				<configuration>
 					<archive>
 						<manifestEntries>
@@ -186,19 +162,12 @@
 			<plugin>
 				<groupId>com.github.spotbugs</groupId>
 				<artifactId>spotbugs-maven-plugin</artifactId>
-				<version>3.1.12.2</version>
+				<version>4.2.0</version>
 				<configuration>
 					<effort>more</effort>
 					<jvmArgs>--add-opens java.base/java.lang=ALL-UNNAMED
 						--illegal-access=deny</jvmArgs>
 				</configuration>
-				<dependencies>
-					<dependency>
-						<groupId>com.github.spotbugs</groupId>
-						<artifactId>spotbugs</artifactId>
-						<version>4.0.0-beta4</version>
-					</dependency>
-				</dependencies>
 				<executions>
 					<!-- Ensures that spotbugs inspects source code when project is deployed. -->
 <!-- 					<execution> -->
@@ -227,10 +196,16 @@
 
 		<pluginManagement>
 			<plugins>
+				<plugin>
+					<groupId>org.apache.maven.plugins</groupId>
+					<artifactId>maven-compiler-plugin</artifactId>
+					<version>3.8.1</version>
+				</plugin>
+
 				<plugin>
 					<groupId>org.apache.maven.plugins</groupId>
 					<artifactId>maven-source-plugin</artifactId>
-					<version>3.1.0</version>
+					<version>3.2.1</version>
 					<executions>
 						<execution>
 							<id>attach-sources</id>
@@ -244,7 +219,7 @@
 				<plugin>
 					<groupId>org.apache.maven.plugins</groupId>
 					<artifactId>maven-javadoc-plugin</artifactId>
-					<version>3.1.1</version>
+					<version>3.2.0</version>
 					<configuration>
 						<failOnError>false</failOnError>
 						<!-- <additionalparam>-Xdoclint:none</additionalparam> -->